body, div, span, header, footer, nav, section, aside, article, ul, dl, dt, dd, li, a, p, h1, h2, h3, h4,h5, i, b, textarea, button, input, select  {
  padding: 0;
  margin: 0;
  list-style: none;
  font-style: normal;
  text-decoration: none;
  border: none;
  color: #313131;
  box-sizing: border-box;
  font-weight: lighter;
  font-family: 'Microsoft YaHei',serif;
  -webkit-tap-highlight-color:transparent;
&:focus {
   outline: none;
 }
}


html{
  height: 100%;
  width: 100%;
}
body{
  height: 100%;
  width: 100%;
  background: url(../images/1-1.jpg) no-repeat;
  background-size: 100% 100%;
}

.clear:after{
  content: '';
  display: block;
  clear: both;
}

.clear{
  zoom:1;
}

.back-img{
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.margin{
  margin: 0 auto;
}

.left{
  float: left;
}

.right{
  float:right;
}

.hide{
  display: none;
}

.show{
  display: block;
}
